2009/11/5 Brian Russo <[email protected]>: > On Thu, Nov 5, 2009 at 4:41 AM, Schuyler Erle <[email protected]> wrote: >> Actually, Paul pointed out (and I agree), that taking advantage of >> geo-locality might actually provide significant optimization to the >> distribution network. So it's not necessarily that simple. > > That's possible, I'm not sure I really agree. I was thinking about it on the > way home and it really depends on the usage case for the data. If the usage > case is something like finding directions, then definitely there'll be a > geolocation component, but for many other uses there will not be (I think) > an appreciable correlation. For example research, agency disaster response, > casual browsing, vacation/trip planning, etc.. Definitely worth looking into > - in the end it really depends what proportion of usage will have a > geolocality aspect and I think if it's rather small then it may not be > worthwhile to implement - but I don't know either way.
There might be gain from locality of the host serving tiles, but the amount of tiles served from a given node should in the first place depend on that node's bandwidth I think. Say I have a 30TB of disks here and a crappy internet link, I'd still want to put those 30TB into helping OAM but mostly as a backup server or, say serve up to one tile / second on average (don't mind spikes). Users near me will have faster download from a node located 500km from here but one with a faster link. But their page will load even faster if they request 10 tiles from that really fast server and remaining 6 tiles from different slower nodes 1 from each. Cheers _______________________________________________ talk mailing list [email protected] http://openaerialmap.org/mailman/listinfo/talk_openaerialmap.org
